JP4182500B2 - Power window equipment - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a power window device that opens and closes a window glass of a vehicle by performing forward and reverse driving of a motor according to a switch operation.
[0002]
[Prior art]
Conventionally, this type of power window device has a drive motor for the window glass opening / closing mechanism, an open-direction drive relay for turning on and off the forward rotation power, and turning on and off the reverse rotation power source. The closed-direction drive relay to be performed and a control unit for controlling the open-direction drive relay or the closed-direction drive relay according to the ON / OFF operation states of the open switch and the close switch.
[0003]
In the conventional power window device configured as described above, when the vehicle is submerged, both contacts of the open switch and the close switch are short-circuited at the same time. It cannot be driven.
[0004]
[Problems to be solved by the invention]
The problem to be solved is that in the conventional power window device, when the vehicle is submerged, the contacts of the open switch and the close switch are short-circuited at the same time. It is not possible to do.
[0005]
[Means for Solving the Problems]
In the present invention, a bias voltage is applied so that the motor of the window glass opening / closing mechanism can be driven by the switch operation even when both the contacts of the opening switch and the closing switch are short-circuited simultaneously when the vehicle is submerged. resistive component with a pressure circuit, a switch signal during the open switch and closing switch is turned off and the high potential level, the switch signal during the open switch and closing the switch has been turned on to a low potential level , its so as to middle potential level switching signal at the time of short-circuit due to water between the switch contacts in each off state, by providing a sensor for detecting a submerged state by the contacts are short-circuited by the water, the control unit each Loading level state of the switches of the switch signal, is detected submerged state by said sensor A condition that is, either one of the switches of the switch signal is a medium potential level, the switch signal of the other switches so that when in the low potential level, accepts the ON command of the other side of the switch.
[0006]
【Example】
FIG. 1 shows an example of a configuration of an electric system in a power window device. Here, a driving motor M for a window glass opening / closing mechanism and an opening for turning on / off a + Vcc power source with a polarity in which the motor M rotates in the forward direction. Read the operating state of the directional driving relay RY1 and the closing direction driving relay RY2 that turns on and off the + Vcc power supply with the reverse polarity of the motor M, and the open switch DOWN / SW and the close switch UP / SW. The control unit ECU is configured to appropriately control energization and deactivation of the opening direction driving relay RY1 or the closing direction driving relay RY2.
[0007]
When the opening switch DOWN · SW or the closing switch UP · SW is turned on, the control signal OCS in the opening direction or the control signal in the closing direction is kept under the control of the control unit ECU. By switching the CCS from the previous high level to the low level, the relay coil of the opening direction driving relay RY1 or the closing direction driving relay RY2 is energized to drive the motor M forward or backward to open the window glass. Or it is to be closed.
[0008]
In the present invention, particularly, in the present invention, resistance voltage dividing circuits 1 and 2 to which a bias voltage + Vcc is applied are provided in each system of the open switch DOWN · SW and the closed switch UP · SW. The switch signal when each of the open switch DOWN · SW and the close switch UP · SW is turned off is set to a high potential level H, the switch signal when each switch is turned on is set to a low potential level L, and the switch contacts between the respective OFF states The switch signal at the time of a short circuit due to water is set to the medium potential level M.
[0009]
Then, the control unit ECU reads the level states of the switch signals of the open switch DOWN · SW and the close switch UP · SW, the switch signal of one of the switches is at the medium potential level M, and the switch signal of the other switch Is at a low potential level L, an ON command for the other switch is accepted.
[0010]
Further, in the present invention, a submergence sensor S that detects a submergence state by short-circuiting between the contacts and an amplifier AMP that amplifies the sensor signal is provided, and the control unit ECU reads the sensor signal so that the submergence state is detected. If the switch signal of one of the switches is at the medium potential level M and the switch signal of the other switch is at the low potential level L on the condition that it is detected, an ON command for the other switch is accepted. I have to.
[0011]
A portion comprising the resistance voltage dividing circuits 1 and 2, the amplifier AMP and the control unit ECU is waterproofed.
[0012]
The operation at the time of submergence of the power window device according to the present invention configured as described above will be described below together with the control flow in the control unit ECU shown in FIG.
[0013]
First, it is determined whether or not a submerged state is detected by the submerged sensor S (step S1). When the submerged state is detected, each drive in both open and closed directions is performed so that the wind glass does not move freely during submergence. In order to output the control signal, the open direction control signal OCS and the close direction control signal CCS are respectively switched to a low level to simultaneously activate the open direction drive relay RY1 and the close direction drive relay RY2 (step S2).
[0014]
Then, it is checked whether or not the switch signal of the closing switch UP / SW is at the M level (short circuit due to submergence) (step S3). It is checked whether the switch signal L is at the L level (ON state) (step S4).
[0015]
At that time, if the switch signal of the open switch DOWN / SW is at the L level, the control signal CCS in the closing direction is switched to the high level so as to invalidate the control signal for the driving in the closing direction that has been output until then. Thus, the closing direction driving relay RY2 is deactivated so that only the driving control signal for the opening direction is output (step S5). Therefore, the control signal OCS in the opening direction becomes a low level, and only the opening direction driving relay RY1 is energized, the motor M is rotated forward, and the window glass is opened.
[0016]
If the switch signal of the open switch DOWN / SW is not at the L level at the time of the determination in step S4, the determination in step S4 is repeated with a predetermined control cycle.
[0017]
If the switch signal of the closing switch UP / SW is not at the M level at the time of the determination in step S3, it is next checked whether or not the switch signal of the open switch DOWN / SW is at the M level (step S6). .
[0018]
At that time, if the switch signal of the open switch DOWN / SW is at the M level, it is confirmed that the switch signal of the close switch UP / SW is at the L level (step S7). In order to invalidate the control signal for the driving in the opening direction that has been output until the control signal OCS in the opening direction is switched to the high level, the opening direction driving relay RY1 is deactivated, and the control signal for the driving in the closing direction Is output (step S8). Accordingly, the control signal CCS in the closing direction becomes low level, and only the closing direction driving relay RY2 is energized, the motor M is driven in reverse rotation, and the window glass is closed.
[0019]
As described above, according to the present invention, even when the vehicle is submerged, the opening switch DOWN / SW or the closing switch UP / SW can reliably open or close the window glass according to the ON operation. become able to.
[0020]
【The invention's effect】
As described above, in the power window device according to the present invention, the resistance voltage dividing circuit to which the bias voltage is applied is used to set the switch signal to the high potential level while the open switch and the close switch are turned off , and the open switch and the switch signal during the closing switch has been turned on and the low potential level, so as to middle potential level switching signal at the time of short-circuit due to water between the switch contacts in each of its off state, the contacts with the water By providing a sensor for detecting a submerged state by short-circuiting, the control unit reads the level state of the switch signal of each switch, and on the condition that the submerged state is detected by the sensor, one of the switches Switch signal is at medium potential level, switch signal of the other switch is at low potential level In some cases, by accepting an ON command for the other switch, even if both the opening and closing switch contacts are short-circuited simultaneously when the vehicle is submerged, the opening switch or closing switch The window glass can be surely opened or closed in accordance with the on-operation.
[Brief description of the drawings]
FIG. 1 is an electric circuit diagram showing a configuration example of an electric system in a power window apparatus according to the present invention.
FIG. 2 is a diagram illustrating a control flow when submerged in a control unit ECU.
[Explanation of symbols]
M Motor RY1 Open direction drive relay RY2 Close direction drive relay DOWN / SW Opening switch UP / SW Closing switch ECU Control unit 1 Resistance voltage dividing circuit 2 Resistance voltage dividing circuit

Claims (1)

A drive motor for the window glass opening / closing mechanism, an open direction drive relay for turning on and off the normal rotation power supply, a closed direction drive relay for turning on and off the reverse power supply, an open switch and a close In a power window device configured with a control unit that controls an open direction drive relay or a close direction drive relay according to the ON / OFF operation state of the control switch, a resistance voltage division to which a bias voltage is applied using the circuit, a switch signal during the open switch and closing switch is turned off and the high potential level, the switch signal during the open switch and closing the switch has been turned on to a low potential level, the respective off so as to middle potential level switching signal at the time of short-circuit due to water between the switch contacts in the state, the contact between the A sensor for detecting a submerged state by shorting the water provided by reading control unit the level state of the switch signal of each switch, the condition that the submerged state is detected by the sensor, one of the A power window device characterized in that when the switch signal of a switch is at a medium potential level and the switch signal of the other switch is at a low potential level, an ON command for the other switch is accepted.

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